Looks like, you didn’t moved database from old server.
for doc preview, please create link and page template with [doc_preview] tag and use those for your package. More details about templates http://www.wpdownloadmanager.com/doc/templates/
for now you can use only single table per page, anyhow we have adjusted it for next update of the plugin, so from next update you will be able to use multiple tables.
that will require good amount of customization in code.
please download wpdm pro & amazon s3 add-on both and update your copy.
wp get link template name, use code <?php get_package_data($package_id, "template"); ?>, more details http://www.wpdownloadmanager.com/doc/function-reference/get_package_data/
File name wpdm-core.php, function name wpdm_dimport
Here it is:

not exactly like that, but you can enable user to download specific file enabling individual download. Example: http://demo.wpdownloadmanager.com/wpdmpro/wpdm-package/multi-file-package/
the word search is coming from /download-manager/js/jquery.dataTables.min.js anyhow I’ll make it translation ready with next update.
please give me temporary wp-admin login info to check it details.
now only individual download is possible, selective download option will be available with pro soon.
Looks like, it is just api access permission issue from amazon s3, probably need to adjust api permission from s3 account. However I tried to login to check but login info is not working.
please give me the url were you trying and tmeorary wp-amdin login info to check your setup. Thanks
please give me temporary wp-admin login info in a private reply, I’ll check.
Use following code:
You can use template tag [file_list_extended] or function wpdm_package_file_list_alt($package); for a file list with preview ( thumb will be shown for images, for others file type icons )
In staging site, I’m still seeing old version, please give me ftp access of staging site to install new version there. Live site login info is not working
you should see new option like this:

After installing and activating the add-on & live forms, you should see form lock option under package settings lock options tab, from that option you can select a form to submit before get access to download.
ok now, you had to enable flat permalink from permalink settings
I tried with unchecking allow comments from a page and it worked perfectly.
need admin access, however please try deactivating other plugins or changing current theme, the issue is happening probably because of some javascript issue with your theme or other plugin.
This feature is only available with WPDM Pro
yes. that is correct email, you will get a reply soon.
which version were before upgrade?
If you were using v3 or v2.6, then you may need to reassign categories with packages.